LibJPEG
jpeg_component_info::v_samp_factor is only used within LibJPEG.
 
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CodeScopeSTM32 Libraries and SamplesLibJPEGjpeg_component_info::v_samp_factor

jpeg_component_info::v_samp_factor field

Syntax

int v_samp_factor;

References

LocationReferrerText
jpeglib.h:132
int v_samp_factor; /* vertical sampling factor (1..4) */
jccoefct.c:86start_iMCU_row()
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
jcmainct.c:290jinit_c_main_controller()
(JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
jcmarker.c:309emit_sof()
emit_byte(cinfo, (compptr->h_samp_factor << 4) + compptr->v_samp_factor);
jcmaster.c:283initial_setup()
compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
jcmaster.c:288initial_setup()
compptr->v_samp_factor);
jcmaster.c:331initial_setup()
jdiv_round_up((long) cinfo->jpeg_height * (long) compptr->v_samp_factor,
jcmaster.c:340initial_setup()
(long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),
jcmaster.c:597per_scan_setup()
tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
jcmaster.c:598per_scan_setup()
if (tmp == 0) tmp = compptr->v_samp_factor;
jcmaster.c:626per_scan_setup()
compptr->MCU_height = compptr->v_samp_factor;
jcparam.c:445jpeg_set_colorspace()
SET_COMP(0, 1, 1,1, 0, 0,0);
jcparam.c:450jpeg_set_colorspace()
SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0);
jcparam.c:451jpeg_set_colorspace()
SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0);
jcparam.c:452jpeg_set_colorspace()
SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0);
jcparam.c:459jpeg_set_colorspace()
SET_COMP(0, 1, 2,2, 0, 0,0);
jcparam.c:460jpeg_set_colorspace()
SET_COMP(1, 2, 1,1, 1, 1,1);
jcparam.c:461jpeg_set_colorspace()
SET_COMP(2, 3, 1,1, 1, 1,1);
jcparam.c:466jpeg_set_colorspace()
SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0);
jcparam.c:467jpeg_set_colorspace()
SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0);
jcparam.c:468jpeg_set_colorspace()
SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0);
jcparam.c:469jpeg_set_colorspace()
SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0);
jcparam.c:474jpeg_set_colorspace()
SET_COMP(0, 1, 2,2, 0, 0,0);
jcparam.c:475jpeg_set_colorspace()
SET_COMP(1, 2, 1,1, 1, 1,1);
jcparam.c:476jpeg_set_colorspace()
SET_COMP(2, 3, 1,1, 1, 1,1);
jcparam.c:477jpeg_set_colorspace()
SET_COMP(3, 4, 2,2, 0, 0,0);
jcparam.c:485jpeg_set_colorspace()
SET_COMP(ci, ci, 1,1, 0, 0,0);
jcprepct.c:176pre_process_data()
numrows = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jcsample.c:505jinit_downsampler()
v_out_group = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jctrans.c:115jpeg_copy_critical_parameters()
outcomp->v_samp_factor = incomp->v_samp_factor;
jctrans.c:234start_iMCU_row()
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
jctrans.c:290compress_output()
coef->iMCU_row_num * compptr->v_samp_factor,
jctrans.c:291compress_output()
(JDIMENSION) compptr->v_samp_factor, FALSE);
jdcoefct.c:93start_iMCU_row()
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
jdinput.c:234initial_setup()
compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
jdinput.c:239initial_setup()
compptr->v_samp_factor);
jdinput.c:355initial_setup()
jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
jdinput.c:366initial_setup()
jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
jdinput.c:413per_scan_setup()
tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
jdinput.c:414per_scan_setup()
if (tmp == 0) tmp = compptr->v_samp_factor;
jdinput.c:442per_scan_setup()
compptr->MCU_height = compptr->v_samp_factor;
jdmainct.c:178alloc_funny_pointers()
rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jdmainct.c:211make_funny_pointers()
rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jdmainct.c:251set_wraparound_pointers()
rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jdmainct.c:280set_bottom_pointers()
iMCUheight = compptr->v_samp_factor * compptr->DCT_v_scaled_size;
jdmainct.c:505jinit_d_main_controller()
rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
jdmarker.c:288get_sof()
compptr->v_samp_factor = (c ) & 15;
jdmarker.c:293get_sof()
compptr->v_samp_factor, compptr->quant_tbl_no);
jdmaster.c:60use_merged_upsample()
cinfo->comp_info[0].v_samp_factor > 2 ||
jdmaster.c:61use_merged_upsample()
cinfo->comp_info[1].v_samp_factor != 1 ||
jdmaster.c:62use_merged_upsample()
cinfo->comp_info[2].v_samp_factor != 1)
jdsample.c:323jinit_upsampler()
v_in_group = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /

Data Use